Post by binbin on Aug 23, 2022 21:24:13 GMT -5
1. Appearance inspection
The surface is smooth, uniform in color, free of paint lumps and white lubricants.
2. Size inspection
2.1 Diameter of enameled wire: standard reference GB/T6109, inspection method: micrometer
2.2 Conductor diameter: Standard reference GB/T6109, inspection method: micrometer
2.3 Diameter of enameled wire: standard reference GB/T6109, inspection method: micrometer
2.4 Conductor error value: standard reference GB/T6109, enameled wire
3. Mechanical properties
3.1 Elongation:
Standard reference GB/T6109, inspection method: stretching instrument
Calculation method: ratio of (length after stretching - length before stretching) / length before stretching;
3.2 Snap break:
The standard is pulled at a speed of 2 meters per second to check that the paint film is not cracked.
3.3 Round bar winding:
Wind the enameled wires of different specifications and the corresponding copper rods ten times to check that the paint film has no cracks, and the diameter of the copper rods shall refer to the requirements of GB/T6109;
3.4 Thermal shock: Put the coiled enameled wire in an oven (hang in the middle of the oven) for 0.5 hours. The oven temperature corresponds to the specification requirements of the enameled wire, refer to GB/T6109, and check that the paint film is free of cracks after baking.
4. Electrical properties
4.1 Resistors:
Take 1m of the enameled wire to be inspected, scrape off the paint film at both ends, and measure the resistance of the enameled wire. The resistance measurement value should be within the resistance range required by GB/T6109; the standard temperature is 20 degrees, and the conversion formula is: 20 degrees resistance / 234.5 + standard temperature=actual measured resistance/234.5+measured temperature;
4.2 Salt bath test:
See Salt Bath Test Standard
4.3 Breakdown voltage: Take 0.5m of enameled wire and fold it in half once, cut off the folded part and scrape off four lines of patent leather, then fold it in half again, and twist the folded enameled wire into a twisted state, (there are two wire ends at each end) Use a high voltage meter to test the high voltage of the two wires at the same end (high voltage standard: refer to the national level 2 standard).
The surface is smooth, uniform in color, free of paint lumps and white lubricants.
2. Size inspection
2.1 Diameter of enameled wire: standard reference GB/T6109, inspection method: micrometer
2.2 Conductor diameter: Standard reference GB/T6109, inspection method: micrometer
2.3 Diameter of enameled wire: standard reference GB/T6109, inspection method: micrometer
2.4 Conductor error value: standard reference GB/T6109, enameled wire
3. Mechanical properties
3.1 Elongation:
Standard reference GB/T6109, inspection method: stretching instrument
Calculation method: ratio of (length after stretching - length before stretching) / length before stretching;
3.2 Snap break:
The standard is pulled at a speed of 2 meters per second to check that the paint film is not cracked.
3.3 Round bar winding:
Wind the enameled wires of different specifications and the corresponding copper rods ten times to check that the paint film has no cracks, and the diameter of the copper rods shall refer to the requirements of GB/T6109;
3.4 Thermal shock: Put the coiled enameled wire in an oven (hang in the middle of the oven) for 0.5 hours. The oven temperature corresponds to the specification requirements of the enameled wire, refer to GB/T6109, and check that the paint film is free of cracks after baking.
4. Electrical properties
4.1 Resistors:
Take 1m of the enameled wire to be inspected, scrape off the paint film at both ends, and measure the resistance of the enameled wire. The resistance measurement value should be within the resistance range required by GB/T6109; the standard temperature is 20 degrees, and the conversion formula is: 20 degrees resistance / 234.5 + standard temperature=actual measured resistance/234.5+measured temperature;
4.2 Salt bath test:
See Salt Bath Test Standard
4.3 Breakdown voltage: Take 0.5m of enameled wire and fold it in half once, cut off the folded part and scrape off four lines of patent leather, then fold it in half again, and twist the folded enameled wire into a twisted state, (there are two wire ends at each end) Use a high voltage meter to test the high voltage of the two wires at the same end (high voltage standard: refer to the national level 2 standard).
